Yarn guide for stitching machines



Aug. 31, 1965 J. J. FEDEVICH YARN GUIDE FOR STITCHING MACHINES 2 Sheets-Sheet 1 Filed March 9, 1962 FIG. I

INVENTOR.

JO EPH J.FEDEV|CH BY ATTORN EYS 1965 J. J. FEDEVICH 3,203,387

' YARN GUIDE FOR STITCHING MACHINES Filed March 9, 1962 2 Sheets-Sheet 2 WINWWF.\\'|LWIL\\" FIG. 3 44 46 FIG. 4

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JOEPH J. FEDE ICH BY Z FIG.5 M 9&6

ATTORNEYS United States Patent 3,283,387 YARN GUIDE FOR STETCHZNG MACHINES Joseph J. Fedevich, Canton, Ohio, assignor to The Canton Tool Manufacturing (10., East Canton, ()hio, a corporation of Ohio Filed Mar. 9, 1962, Ser. No. 178,645 1 Claim. (Cl. TILL-218) The invention relates to stitching machines which have a plurality of closely spaced needles and in particular is directed to an improved yarn guide for such machines.

Stitching machines, such as shown in US. Patent No. 2,889,791 may be used to provide a fabric backing with a looped pile surface, and may have one or more transverse rows of closely spaced needles which are threaded with separate threads or yarns or cords. In one model of a one hundred inch machine, for example, there are 1248 needles, or slightly more than twelve needles to the inch. The thread or yarn or cord comes from a creel, which may be a frame for holding the supply bobbins or reels of the individual yarns, and which is usually spaced some distance from the machine. The individual yarns are kept separated by passing them through tubes until they reach the machine where the yarns are then guided to the individual needles by one or more rows of guide bars. The wear on the yarns due to rubbing across the open sides of the needles is minimized by guiding each yarn so that it is brought to the open side of a needle. The guide bars have a series of closely spaced holes, one hole per needle and it is necessary to thread the yarn through each hole; perhaps as many as three or four times, passing the individual yarn through three or four rows of guide bars. This, of course, is a very tedious and time consuming operation, especially when a machine, such as the one hundred inch model with 1248 needles, is being set up for operation.

One of the objects of the invention is to simplify a large portion of the threading set-up operation of a stitching machine by providing yarn guides into which the individual yarns may be quickly and easily snapped.

A further object is to provide a yarn guide which has a plurality of fingers defining transverse open-ended slots with means on every other finger to partially restrict the passage of an individual yarn into and out of one of the transverse open-ended slots.

These and other objects accomplished :by the improved yarn guide will become apparent from the preferred embodiment of the invention which is shown by way of example in the accompanying drawings and described in detail herein.

Referring to the drawings forming part hereof:

FIG. 1 is a fragmentary elevational view of a stitching machine partly broken away to show the rows of yarn guides guiding the yarns to one row of needles;

FIG. 2 is an enlarged fragmentary plan view of the improved yarn guide taken along line 22 of FIG. 1;

FIG. 3 is an enlarged elevational view of the improved yarn guide partly in cross section taken along line 3-3 of FIG. 2;

FIG. 4 is a cross sectional view of the improved yarn guide as connected by a bolting lug to a mounting bracket taken along line 4-4 of FIG. 2;

FIG. 5 is an enlarged fragmentary elevation of the improved yarn guide of FIG. 2 illustrating a yarn being snapped into one of the transverse open-ended slots.

FIG. '6 is a plan view taken along line 6-6 of FIG. 5 illustrating the yielding movement of one of the fingers as the individual yarn is snapped into the slot.

In referring to the drawings FIG. 1 broadly illustrates an exemplary stitching machine 10 on which the improved yarn guides may be mounted. Each row of needles 12 illustrated is held in a needle retaining bar 14, the latter 3,203,387 Patented Aug. 31, 1965 in turn being secured to a mounting bar 16. The mounting bar is fixed to a collar 18 upon a shaft 20, and the shaft is reciprocatorily guided within a mounting head 22.

The individual yarns Y pass from the creel (not shown) through tubes 24 carried on a bar 26 mounted on the upper portion of the stitching machine 10. The yarns pass between rubber guide rolls 28 and 30 and down through the first of three rows of yarn guides 32. They are then threaded through holes in the bar 34 and thence to the needles.

Each row of yarn guides 34, .as illustrated in FIG. 2, is made up preferably of separate longitudinal plate members of sections A, B, C, etc., and the plate members or sections are secured to mounting brackets 36 through the agency or apertures 38 in the individual yarn guide or section and bolting lugs 49.

The yarn guides 34 may be preferably made from a resilient semirigid material, such as nylon, for example, and basically comprise a series of transverse open-ended alternate slots 42A and 42B, of two different depths defined by a series of alternate fingers 44 and 46 of different lengths. The bases of the slots are transversely staggered in order to further maintain separation of adjacent yarns which lead to the closely spaced needles.

Each finger 46 is longer than and projects beyond its adjacent neighboring fingers 44 at the open ends of the slots, and constitutes a guide finger against the sides of which the individual yarns Y may be directed for snapping into each one of the adjacent slots.

Each finger 44 has a T-shape head 48 which cooperates with the adjacent guide fingers 46 to partially restrict the entrance to a slot. The entrance is further restricted by beveling the side surfaces 50 and 52 respectively, of the T-shape head 48 and guide finger 46, as illustrated in FIGS. 3 and 5, so that each is wider at its base than at its top in the installed position of FIG. 2 and as illustrated in FIG. 3.

As may be observed from FIGS. 5 and 6, the individual yarn Y is partly compressed at the point of the entrance restriction to a slot and also there is a slight give or flexure in a lateral direction by one of the fingers, as shown by the arrows 54 in FIG. 5, to permit the admission of the yarn into the open-ended slot. Due to the beveled side surfaces of the fingers the slot openings are wider at the top than at the bottom, facilitating the admission of the yarn by pulling downwardly and inwardly thereon as it enters between the ends of the fingers and is then pulled toward the base of the slot. Because of the partial restriction and the manner in which the beveled side surfaces of adjacent fingers are divergent with resoect to each other when in installed position, the yarn is prevented frorn inadvertently coming out of the slot during operating conditions of the stitching machine causing slack in the yarns.

What is claimed is:

In -a yarn stitching machine having a row of closely spaced needles, a yarn guide comprising a plurality of coplanar fingers defining transverse slots therebetween for guiding yarn to said needles, each transverse slot being closed at one end and open at the other end,

every other finger projecting beyond the fingers on either side thereof at the open ends of the slots and constituting a yarn guide finger against the sides of which the individual yarns are guided for admission to the slots on either side of said guide finger,

each finger on either side of the guide finger having a T-shaped head at its extremity cooperating with adjacent guide fingers to partially restrict the entrance to the open ends of the slots on either side of said each finger.

(References on following page) References Cited by the Examiner UNITED STATES PATENTS Corey 28-54 Small 21189 X Hassold 2854 X Gladish 11279.5 X

R'assons 112-254 Trapido 242157 Tashjian 242157 Fedevich 11279 Broschard 66-1.1

JORDAN FRANKLIN, Primary Examiner.

THOMAS J. HICKEY, Examiner. 

